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Analog Devices Inc. AD4696BCPZ
- Part No.:
- AD4696BCPZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-WFQFN Exposed Pad, CSP
- Datasheet:
-
AD4696BCPZ.pdf
- Description:
- IC ADC 16BIT SAR 32LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,252
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Product details
Overview
AD4696BCPZ from Analog Devices is a 16-bit, 16-channel, 1 MSPS multiplexed SAR ADC with Easy Drive architecture, integrated oversampling (up to OSR = 64), on-chip reference buffer (in WLCSP only - not applicable to BCPZ), and autonomous conversion mode. It delivers ±1.0 LSB INL, 93 dB SINAD at 1 kHz, and operates from −40°C to +125°C in a 5 mm × 5 mm 32-lead LFCSP package for high-density precision data acquisition in photodiode monitoring and medical instrumentation.
For engineers reviewing the AD4696BCPZ datasheet, AD4696BCPZ pinout, AD4696BCPZ application, or AD4696BCPZ equivalent, this page provides verified specifications including true 16-bit no-missing-codes performance, 1 MSPS sample rate, analog input overvoltage protection up to 5 mA per channel, long acquisition phase (715 ns/1000 ns), and low-power operation (8 mW at 1 MSPS) - all critical for multichannel industrial sensor systems requiring minimal AFE complexity.
Technical Context
The AD4696BCPZ implements a true 16-bit successive approximation register (SAR) core with no missing codes and features a 16-channel low-crosstalk multiplexer, flexible channel sequencer, and threshold detection with alert indicators. Its Easy Drive architecture enables analog input high-Z mode and reference input high-Z mode, reducing external driver requirements.
It supports unipolar and pseudobipolar input modes, offers on-chip oversampling and decimation (OSR = 1–64), offset/gain correction registers, and autocycle mode for interrupt-driven low-power firmware. The LFCSP package variant lacks the internal reference buffer found only in the WLCSP version, requiring external buffered reference drive.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | True 16-bit with guaranteed no missing codes - ensures full dynamic range utilization without code gaps in precision measurement. |
| Sample Rate | 1 MSPS maximum - enables real-time capture of fast transients across 16 channels with effective per-channel rates up to ~62.5 kSPS in round-robin sequencing. |
| INL | ±1.0 LSB max - maintains linearity accuracy critical for calibration-sensitive applications like vital signs monitoring. |
| SINAD | 93 dB typical at fIN = 1 kHz - supports >15 ENOB for high-fidelity signal reconstruction in test equipment. |
| Oversampled DR | 111.2 dB at OSR = 64 - achieves 18.2-bit effective resolution for low-frequency noise-sensitive measurements (e.g., thermocouple or strain gauge). |
| Power Dissipation | 8 mW at 1 MSPS - enables battery-powered portable instrumentation with thermal headroom in compact enclosures. |
| Operating Temp | −40°C to +125°C - qualified for under-hood automotive sensors, industrial PLC I/O modules, and downhole equipment. |
Pinout & Package
AD4696BCPZ is housed in a 32-lead, 5 mm × 5 mm lead frame chip scale package (LFCSP) with exposed paddle (EP). This thermally enhanced package supports high-reliability operation in extended temperature environments and enables efficient PCB heat dissipation without additional heatsinking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AVDD | Analog supply input | 2.7 V to 5.5 V single supply; powers SAR core, mux, and analog front end - must be locally decoupled with 10 µF + 100 nF. |
| VIO | Digital I/O supply | 1.14 V to 1.98 V logic interface - enables direct connection to 1.8 V microcontrollers without level shifters. |
| REF/REFIN | Reference voltage input | Accepts 2.4 V to AVDD + 0.25 V; high-Z mode reduces drive burden - requires external buffer when using unbuffered reference sources. |
| CONVST | Conversion start trigger | Edge-sensitive input initiating sampling; supports hardware-triggered synchronized acquisition across multiple ADCs. |
| SDO_A / SDO_B / SDO_C / SDO_D | Serial data outputs | Quad-SDO mode allows 16-bit readout at ≤12.5 MHz SPI clock - halves required SCLK frequency vs. single-SDO mode. |
| ALERT | Threshold violation indicator | Open-drain output asserting on channel-specific over/under-limit events - enables interrupt-driven firmware with zero polling overhead. |
Key Features
| Feature | Design Value |
|---|---|
| Easy Drive analog input high-Z mode | Reduces input drive requirement to <12 µA at 1 MSPS - eliminates need for dedicated op-amp drivers in multichannel AFEs. |
| On-chip oversampling & decimation | Configurable OSR up to 64 - improves SNR by 17.8 dB and suppresses aliasing without external digital filtering resources. |
| Autonomous conversion (autocycle) mode | Hardware-managed sequencing with programmable period (8.5–920 µs) - offloads timing-critical tasks from host MCU. |
| Per-channel threshold detection | Independent high/low limits per input with ALERT pin assertion - enables real-time fault detection in safety-critical monitoring loops. |
| Overvoltage protection clamps | ±5 mA tolerance per analog input with 50 ns activation - prevents damage and crosstalk during sensor disconnect or ESD events. |
Applications
| Photodiode Monitoring | Medical Instrumentation |
|---|---|
Use Scenario: Simultaneous readout of 16 photodiode current outputs in optical blood oximetry or fluorescence spectroscopy systems. IC Role / Device Role / Timing Role: Precision multichannel digitizer with autocycle mode managing periodic sampling and ALERT-driven saturation detection. Use Value: 16-bit resolution and 93 dB SINAD preserve weak photocurrent signal integrity; 1 MSPS aggregate rate captures transient absorption peaks. |
Use Scenario: High-density electrode interface in portable ECG/EEG monitors with integrated lead-off detection and motion artifact rejection. IC Role / Device Role / Timing Role: Low-power, high-isolation ADC acquiring biopotential signals while autonomously triggering alerts on baseline drift or electrode detachment. Use Value: −123 dB channel-to-channel isolation prevents cross-talk between differential leads; −40°C to +125°C rating supports sterilization cycles. |
| Automated Test Equipment | Battery-Powered Equipment |
Use Scenario: Modular PXI-style DAQ card performing simultaneous voltage/current measurements across 16 DUT pins during functional testing. IC Role / Device Role / Timing Role: High-accuracy SAR ADC with quad-SDO interface enabling fast data streaming to FPGA-based acquisition engine. Use Value: 111.2 dB oversampled DR at OSR=64 resolves µV-level leakage currents; 8 mW power enables dense channel packing in fanless chassis. |
Use Scenario: Portable gas analyzer using electrochemical sensors where low standby power extends field operation time between charges. IC Role / Device Role / Timing Role: System-on-module ADC operating in ultra-low-power standby (4 µW with LDO disabled) and waking on timer or external event. Use Value: 4 µW standby power + autocycle mode reduces average system current to <10 µA - doubles battery life in 10-year deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multichannel precision ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD4695BCPZ | Same LFCSP package and pinout, but rated for 500 kSPS max sample rate and lower power (4 mW at 500 kSPS); identical INL/SINAD specs. | Targeted at cost-optimized or lower-bandwidth systems where 1 MSPS is unnecessary - e.g., slow-scan process control or environmental logging. | Select AD4695BCPZ when aggregate throughput ≤500 kSPS suffices and board space/power budget permits same footprint. |
| LTC2358ILX-16#PBF | 16-bit, 8-channel, 1 MSPS SAR ADC in 48-lead LQFP; no on-chip oversampling or autocycle mode; requires external reference buffer and driver amplifiers. | Designed for high-voltage industrial inputs (±10.24 V range); lacks integrated overvoltage clamps and threshold detection logic. | Choose LTC2358ILX-16#PBF only when needing higher input voltage range or LQFP assembly compatibility - not a drop-in replacement. |
Compared with AD4696BCPZ, AD4695BCPZ offers identical feature set at half the speed and power, making it suitable for bandwidth-constrained designs; LTC2358ILX-16#PBF trades integrated digital functionality for wider input range and different packaging, increasing BOM count and layout complexity.
Availability
AD4696BCPZ is available at Aetrix Electronics and suitable for photodiode monitoring, medical instrumentation, and automated test equipment requiring stable component supply, long-term lifecycle support, and traceable sourcing for ISO 13485 and IATF 16949 certified production programs.
Supply support for AD4696BCPZ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The AD4695/AD4696 product line was designed specifically for space-constrained, multichannel precision data acquisition systems - emphasizing reduced AFE complexity, autonomous operation, and robustness in harsh environments.
FAQ
What is the maximum sample rate supported by the AD4696BCPZ?
The AD4696BCPZ supports a maximum sample rate of 1 MSPS in conversion mode. This applies to the full 16-channel sequence in round-robin fashion, yielding an effective per-channel rate of approximately 62.5 kSPS. The device maintains ±1.0 LSB INL and 93 dB SINAD at this rate, as validated in the Rev. B datasheet under standard test conditions (VREF = 5 V, fIN = 1 kHz, TA = −40°C to +125°C). The AD4696BCPZ is distinct from the AD4695BCPZ, which is limited to 500 kSPS.
Does the AD4696BCPZ include an on-chip reference buffer?
No, the AD4696BCPZ (LFCSP package) does not include an on-chip reference buffer. That feature is exclusive to the WLCSP variant (e.g., AD4696BCPZ-RL7 in 36-ball WLCSP). The AD4696BCPZ requires an externally buffered reference source capable of driving up to 320 µA at 1 MSPS when reference high-Z mode is disabled, or as low as 12 µA when enabled. Reference input high-Z mode must be configured via register to reduce drive burden.
How does the Easy Drive architecture reduce system design complexity for the AD4696BCPZ?
The Easy Drive architecture in the AD4696BCPZ reduces system design complexity through analog input high-Z mode and reference input high-Z mode, lowering required drive current to ≤12 µA at 1 MSPS. This eliminates the need for high-speed op-amp drivers in front of each channel and simplifies reference circuitry - especially beneficial in 16-channel layouts where board area and power are constrained. The AD4696BCPZ also integrates overvoltage clamps (±5 mA per input) and threshold detection, further reducing discrete protection components.
What package type and thermal characteristics does the AD4696BCPZ use?
The AD4696BCPZ uses a 32-lead, 5 mm × 5 mm lead frame chip scale package (LFCSP) with exposed paddle (EP). Its thermal resistance θJA is 36°C/W (JEDEC standard, 2-layer board), and θJC is 5.5°C/W, enabling reliable operation up to +125°C ambient when properly mounted with soldered EP to a thermal pad. This package supports high channel density while maintaining thermal stability in compact industrial and medical enclosures.
Can the AD4696BCPZ operate from a single 3.3 V supply?
Yes, the AD4696BCPZ can operate from a single 3.3 V analog supply (AVDD = 3.3 V), within its specified 2.7 V to 5.5 V range. Digital I/O (VIO) may be independently supplied from 1.14 V to 1.98 V - allowing direct interfacing with 1.8 V microcontrollers. The internal LDO can be disabled to support dual-supply configurations, and standby power drops to 4 µW when both LDO and reference buffer are disabled - ideal for battery-backed systems.
AD4696BCPZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 32-WFQFN Exposed Pad, CSP
- Packaging:
- Tray
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 1M
- Number of Inputs:
- 16
- Input Type:
- Pseudo-Differential
- Data Interface:
- DSP, MICROWIRE, QSPI, Serial, SPI
- Configuration:
- MUX-ADC
- Ratio - S/H:ADC:
- 0:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 1.71V ~ 1.89V, 3.15V ~ 5.5V
- Voltage - Supply, Digital:
- 1.71V ~ 1.89V, 3.15V ~ 5.5V
- Features:
- Temperature Sensor, Internal Oscillator
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 32-LFCSP-WQ (5x5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD4696BCPZ FAQ
1.How can I place an order for AD4696BCPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD4696BCPZ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AD4696BCPZ reliable?
The price and inventory of AD4696BCPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD4696BCPZ is usually 5 days.
3.What payment methods are accepted for AD4696BCPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD4696BCPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD4696BCPZ?
AD4696BCPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD4696BCPZ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AD4696BCPZ?
For technical support, including AD4696BCPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD4696BCPZ requirements.
6.How does Aetrix verify that AD4696BCPZ is sourced from the original manufacturer or authorized distributors?
All AD4696BCPZ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AD4696BCPZ meets industry standards.
7.What is the process for return or replacement of AD4696BCPZ?
All AD4696BCPZ units undergo pre-shipment inspection (PSI). If there is an issue with AD4696BCPZ, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AD4696BCPZ part is unused and in its original packaging.
Return procedure for AD4696BCPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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